Sectional steam-boiler



(No Model.)

W. F. CUNNINGHAM.

SECTIONAL .STEAM BOILER. v

No. 593,836; Patented Nov. 16.1897.

UNITED STATES PATENT EETCE.

WILLIAM F. CUNNINGHAM, OF BROOKLYN, NEV YORK.

SECTIONL STEAM-BOILER.

SPECIFICATION forming part of .Letters Patent IIa-593,836, dated November 16, 1897.

Appiicnjuon flied July 16, 1897.

To all whom, t may concern:

Be it known that I, W'ILLIAM F. OUNNING- HAM, of the city of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement inSectional Steam-Boilers, of which the following is a specification.

This invention, which is applicable to sectional boilers the sections of which may be of various forms, relates particularly to the set' ting 'or casing within which the sections are inclosed and to the arrangement of the sections and Hue-spaces within said casingy or setting, as hereinafter described and claimed, whereby nearly all parts of the several sections are exposed to the circulating gaseous productsof combustion and a very extensive heating-surface is obtained.

Figure l of the accompanying drawings represents a transverse vertical section of a sectional boiler and its setting or casing embodying my invention; Fig. 2,1a central longitudinal section of the same; Fig. 3, a horizontal section about on the'line 3 3 of Fig. 1.

Similar letters of reference designate corresponding parts in all the figures.

A A designate the several sections of the boiler. B designates the setting or casing `which surrounds and incloses the several sections and which may be of brickwork or iron, b-ut is represented as having its sides and back of brickwork, its front of iron, and its crown or roof of iron covered in with brick- Work. The several sections A A are represented as in two series, arranged one series on' each side of the center of the fire-grate O and so formed as to include within their lower vthat a fire-chamber is formed within or be- Y tween them and that they are set at'such a distance apart, as shown'in Figs. 2 and 3, as

semi Nb. 644,776. (No model.)

to form between them narrow tlues dd, which diverge laterally from the tire-chamber.

The sides of the setting or casing B are so spaced outwardly or, laterally from the section-s A A, as shown in Figs. l and 3, as to form lues e c, running along the whole series of sections on eac-h side of the boiler, the vsaid spaces or flues being closed in the front and havingv no outlet but at the rear of the boiler, where the setting is carried so far back as to form an upright flue f, (see Figs. 2 and 3,) represented as of the whole width of the boi-ler. From this ilue the outletA is at its rear to the rear end of a i'lue g, which is also represented as of the full width of the boiler and which'runs over the tops of the sections A between them and the root` or crown of the setting or casing, the outlet h from said flue g to the uptake or chimney being near the front end of the boiler.

The back flue f is formed between the rearmost sections A and the rear wall of the setting or casing partly by a wall 'L' built across the rear of the tire-chamber and partly by a plate j, arranged abovev and forming an upward continuation of said wall close in rear of per parts of the several sections are tted at the top by suitable means, as plates p, Fig. l, to prevent any directly-upward communication between the lateral lines d and the top liue g. Direct upward communication from the side lues c to the top tlue g is prevented by the side walls of the casing being formed with inward projections Z along so much of their interiors as includes the whole series of sections A, the said projections fitting closely to the several sections on eachside of the boiler.

l The circulation of the gaseous products of combustion from the iire-chamber to the flueoutlet or smoke-pipe h is first from the firechamber, laterally through the narrow lues d d between the boiler-sections, as indicated by the arrows 4 A in Figs. l and 3, to the side ues e e, then along the said side flues, as in- IOO dicated by the arrows 5 5, to the back iue j", up which they pass, as indicated by the arrows G G, to the top iiue g, and through the latter over the upper parts of the sections, as indicated by the arrows 7 7, to the chimney. This circulation includes almost every portion of the surface of every section.

A clean-out door G is represented at the bottom of the back luefand one, II, above the sections A A.

This improvement applies not only to boilers for generating steam, but to so-called boilers which are simply water-heaters.

Vhat I claim as my invention is- 1. In a sectional boiler and a setting or casing therefor, the combination of a series of boiler-sections including within them a central fire-chamber and havingr between them spaces forming iiues which diverge laterally from said chamber but are closed at the top, and side iiues with which said laterally-divergent flues severally communicate and from which there are outlets common to the said laterallydivergent fines, substantially as herein set forth.

2, In a sectional boiler and a setting or casing therefor, the combination of a series of boiler-sections including within them a central lire-chamber and having between them spaces forming iiues which diverge laterally from said chamber but are closed at the top, side flues with which the said laterally-diver gent iiues severally communicate, a back fiue with which said side iiues communicate in rear of the several sections, and a top iue with which said back iiue communicates and which runs over the several sections, substantially as herein described.

3. The combination of the boiler-sections A A arranged in two opposite series those of each series being separated by flue-spaces d (l, the central fire-chamber D between the two series of sections, the plates 1) p closing the fine-spaces d CZ at the top of said sections, the wall in rear of said sections, and the inclosing casing B within which are formed the fines e ef and g, the said iiucs e e forming lateral outlets to the fluespaces (Z (l, the flue fforming an outlet in rear of the sections A A and wall 1l j from the rear of the lines e e, and the iiue g forming an outlet above the sections A Aand Wall from the said fluef to the chimney-outlet 7L, all substantially as herein described.

VILLIAM F. CUNNINGHAM. lVitnesses:

FREDK. IIAYNES, GEORGE BARRY, Jr. 

